75 minutes which is 1 hour and 15 minutes (:
        
             
        
        
        
A segment bisector is a geometric figure that divides the line segment exactly in half.
Vertical angles theorem states that vertical angles, angles that are opposite to each other and formed by two intersecting straight lines, are congruent.
        
             
        
        
        
#7) -7,-2,0,3,4
#8) -9,-6,-5,1,8
        
             
        
        
        
Answer:
Check explanation
Step-by-step explanation:
I'll give you my way of solving it and you can figure it out from there.
<CEA = <DEB due to vertical angles
AE = ED due to midpoint theorem
<CAD = <ADB due to alternating angles theorem
thus two triangles congruent due to ASA